Thyroepiglottic Muscle, Superior View

Description

Arising from the inner surface of the thyroid cartilage, the thyroepiglottic muscle courses superiorly and posteriorly toward the lateral margin of the epiglottis, where its fibers blend with the aryepiglottic fold at the laryngeal inlet. From a superior viewpoint, you would expect the epiglottic cartilage to sit anterior to the laryngeal vestibule, with the paired aryepiglottic folds forming the medial borders of the piriform recesses laterally. The thyroid lamina lies inferior and anterior to these soft tissue structures, anchoring the thyroepiglottic fibers as they pass deep to the mucosa. Small muscle, real consequence. Functionally, the thyroepiglottic muscle is often described as a tensor of the laryngeal inlet because its pull can widen the aditus laryngis by drawing the epiglottis and aryepiglottic fold anteriorly and laterally, counterbalancing sphincteric action from the aryepiglottic and oblique arytenoid fibers during airway protection. That relationship matters in endolaryngeal surgery and airway management: edema, scarring, or iatrogenic injury along the aryepiglottic fold can stiffen the inlet, contributing to supraglottic narrowing and postoperative dysphagia or stridor. The superior perspective clarifies the geometry of the inlet better than a lateral schematic. Use this artwork in laryngeal anatomy teaching for speech and swallowing courses, in otolaryngology atlases covering supraglottic landmarks, or in procedural guides discussing supraglottic airway devices and transoral approaches to the epiglottis and aryepiglottic folds. Anatomical accuracy verified by SciePro's Medical Advisory Board.